6 papers
Measurement of the beam-helicity asymmetry in the p(e_pol,e'p)pi_0 reaction at the energy of the Delta(1232) resonance
P. Bartsch, D. Baumann, J. Bermuth +32
In a p(e_pol,e'p)pi_0 out-of-plane coincidence experiment at the 3-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around th…
Neutral pion threshold production at Q^2=0.05 GeV^2/c^2 and Chiral Perturbation Theory
Harald Merkel, Peter Bartsch, Dagmar Baumann +31
New data are presented on the p(e,e'p)π^0 reaction at threshold at a four-momentum transfer of Q^2=0.05 GeV^2/c^2. The data were taken with the three-spectrometer setup of the A1 C…
Precise Neutron Magnetic Form Factors
G. Kubon, H. Anklin, P. Bartsch +36
Precise data on the neutron magnetic form factor G_{mn} have been obtained with measurements of the ratio of cross sections of D(e,e'n) and D(e,e'p) up to momentum transfers of Q^2…
Self energies of the pion and the delta isobar from the ^3He(e,e'pi^+)^3H reaction
M. Kohl, M. Kuss, C. Rangacharyulu +7
In a kinematically complete experiment at the Mainz microtron MAMI, pion angular distributions of the He(e,e'H reaction have been measured in the excitation region of t…
Coherent π^0 threshold production from the deuteron at Q^2 = 0.1 GeV^2/c^2
Ingo Ewald, Peter Bartsch, Dagmar Baumann +29
First data on coherent threshold π^0 electroproduction from the deuteron taken by the A1 Collaboration at the Mainz Microtron MAMI are presented. At a four-momentum transfer of q^2…
A measurement of the axial form factor of the nucleon by the p(e,e'pi+)n reaction at W=1125 MeV
A1 Collaboration, A. Liesenfeld
The reaction p(e,e'pi+)n was measured at the Mainz Microtron MAMI at an invariant mass of W=1125 MeV and four-momentum transfers of Q^2=0.117, 0.195 and 0.273 (GeV/c)^2. For each v…